Anyone wearing eye glasses or experiencing difficulty focusing may benefit by adding a diopter corection lens to the viewfinder. Diopter correction lenses adjust for near or farsightedness and permit your eye to more clearly see the focusing screen, thereby enabling you to achieve consistently sharp photographs.

Set C for farsighted eyes contains 3 lenses : +1, +2, +3

The positive diopters have red designation marks.

Set D for nearsighted eyes contains 5 lenses: -0.5, -1, -2, -3, -4

The negative diopters have white designation marks and the �0.5 does not have a designation mark.